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CC1314R10: Even when setting the transmission power of the board to MAX (14dBm), it only outputs 8dBm.

K.Z
Expert 1160 points
Part Number: CC1314R10

Tool/software:

Hi All,

Even when setting the transmission power of the customer board to MAX (14dBm), it only outputs 8dBm. When tested with the LP-EM-CC1314R10, 14dBm output was confirmed.

The TI board uses a crystal, but the customer board uses a TCXO.

The driver software was created using the TI System Configuration Tool.

(Wireless communication itself is working fine.) 

Do you have any documents or literature that could provide hints or solutions for similar cases?

Best Regards,

Ito

  • 0
    TI__Genius 14660 points

    Hi Ito,

    Please provide the following information to assist with this:

    • Is the target frequency still 868/915 MHz?
    • Is the RGZ or RSK device being used for the design?
    • Following on from the previous question, which reference design was followed?
    • Are the measurements conducted?
    • Is the ouput power being measured when transmitting a CW output (to simplify measurements)?
    • To start with, please test using SmartRF Studio 7 to isolate just the RF peformance and share details of your test setup, a screenshot of your SmartRF Studio configuration, and (if possible) screengrabs of your measurements.

    You may find the following documents useful:

    Regards,

    Zack

  • 0 in reply to ZC
    Expert 1160 points

    Hi Zack,

    Thank you for your reply.

    ZC said:
    Is the target frequency still 868/915 MHz?

    920～928MHz

    ZC said:
    Is the RGZ or RSK device being used for the design?

    RSK

    ZC said:
    Following on from the previous question, which reference design was followed?

    Reference design is LP-EM-CC1314R10.
    Only the clock is changed to a TCXO.

    ZC said:
    Are the measurements conducted?

    Checking with customer.

    ZC said:
    Is the ouput power being measured when transmitting a CW output (to simplify measurements)?

    There was no change in power even at CW output.

    ZC said:
    To start with, please test using SmartRF Studio 7 to isolate just the RF peformance and share details of your test setup, a screenshot of your SmartRF Studio configuration, and (if possible) screengrabs of your measurements.

    My cusutomer is using SmartRF Studio 7 (ver 2.30.0) and it does not work.
    Is there a problem with the procedure?

    1, Write studio_fw_cc13x4_cc26x4_rev2_sram.bin on the target board
    2, Click CC1314R10 icon in RF Studio
    3, Set Custom Target Configuration as in the attached image
    TCXO power is supplied from DIO TCXO power is supplied from DIO30 (save as ‘205M’)


    4, Select 100kbps,25kHz Deviation,2-GFSK,137kHz RX Bandwidth for Typical Setting.


    5, Set frequency to 925MHz. Change

    6, Select Continuous TX tab 
    →Start button remains Disable.

    Best Regards,

    Ito